Scooterotica

cheers ian for the info, think i will be going for a scooter restorations big bore in kit form. i can then make it fit like a glove

Terrible Taff wrote:

tea5ive wrote:which out of these exhausts indian bigbore, af clubman or ancilotti would be best suited to a tuned cast 190 . dont want an expansion type exhaust and as the mb clubman, jl/fran clubmans are still a myth it will have to be one of the 3 mentioned. oh and a gori is way too much money for me. cheers simon

Simon

On the Taffspeed Specials that we built all used the Indian GP200 Bigbore system, with the porting done to the cylinder they worked well & were not loud!
Your 190cc cast cylinder should work well with 175'-180' exhaust timing @ 42mm width, transfers about 126', inlet approx 150' with a 28-30mm Dellorto.

I hope this helps you decide & make a choice within your budget.

Best regards
Ian

will be getting a bigbore in kit form, nice and cheap :anbrgin;

goldeneye wrote:joking apart, its not that much louder with the mesh out of it, not as loud as some expansions. nice "ring ting" sound. the Indian "big bore" is a good pipe , the fitting can be hit and miss (mine is spot on), but for the money, mine was 20 quid, a bit of fettling....

twin pipe will now be retired for a while . indain bigbore will be this years pipe, no ear plugs needed :anbrgin;

Andy Pickering wrote:

Muppet wrote:^aye an its a canny bit quieter too^

That won't suit Simon..he leaves all his riding companions completely mutton

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i have cut open my twin pipe clubman to see whats not inside







what could be done to improve performance and would i be right in thinking that a 48mm bigbore is only different to a 42mm due to the down pipe and nothing else / cheers simon

just to add i have removed the wafer thin mesh aswell, measured the 2 pipes at around 3/4". i was thinking cut the perferated bits off the pipes and block one off

Is that of your red and silver s2

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yes andy, no point buying one in kit form when i have a grinder and a welder. keep ear plugs :anbrgin;

Andy Pickering wrote:Is that of your red and silver s2

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At least I can now see the reason for my tinnitus .

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started to alter the pipe today,

first make a 50mm stub



the yellow bit is the 50mm with a bit of the 42mm inside it



stub lined up ready for tacking



pipe blocked off



will shorten the u bend and make a short cone. i have no idea what efect this will have on performance :anbrgin;

Andy Pickering wrote:At least I can now see the reason for my tinnitus .

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I know how you feel mate get a baffle in it Simon

any news here, pipe tested? how does it perform? any which mods has been done more to it ?